25254725 has 12 divisors (see below), whose sum is σ = 31401636. Its totient is φ = 20148480.

The previous prime is 25254703. The next prime is 25254727. The reversal of 25254725 is 52745252.

25254725 = 3553² + 3554².

It can be written as a sum of positive squares in 6 ways, for example, as 4661281 + 20593444 = 2159^2 + 4538^2 .

It is not a de Polignac number, because 25254725 - 2⁶ = 25254661 is a prime.

It is a super-2 number, since 2×25254725² = 1275602269651250, which contains 22 as substring.

It is an alternating number because its digits alternate between even and odd.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 25254691 and 25254700.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25254727) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 9659 + ... + 11991.

It is an arithmetic number, because the mean of its divisors is an integer number (2616803).

Almost surely, 2^25254725 is an apocalyptic number.

25254725 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

25254725 is the 3554-th centered square number.

It is an amenable number.

25254725 is a deficient number, since it is larger than the sum of its proper divisors (6146911).

25254725 is a wasteful number, since it uses less digits than its factorization.

25254725 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2776 (or 2771 counting only the distinct ones).

The product of its digits is 28000, while the sum is 32.

The square root of 25254725 is about 5025.4079436400. The cubic root of 25254725 is about 293.3915137982.

Adding to 25254725 its reverse (52745252), we get a palindrome (77999977).

The spelling of 25254725 in words is "twenty-five million, two hundred fifty-four thousand, seven hundred twenty-five".