25290125 has 24 divisors (see below), whose sum is σ = 36723960. Its totient is φ = 17337600.

The previous prime is 25290113. The next prime is 25290137. The reversal of 25290125 is 52109252.

It is an interprime number because it is at equal distance from previous prime (25290113) and next prime (25290137).

It can be written as a sum of positive squares in 4 ways, for example, as 866761 + 24423364 = 931^2 + 4942^2 .

It is not a de Polignac number, because 25290125 - 2⁶ = 25290061 is a prime.

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

It is a junction number, because it is equal to n+sod(n) for n = 25290094 and 25290103.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 4061 + ... + 8189.

It is an arithmetic number, because the mean of its divisors is an integer number (1530165).

Almost surely, 2^25290125 is an apocalyptic number.

25290125 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

25290125 is a deficient number, since it is larger than the sum of its proper divisors (11433835).

25290125 is an equidigital number, since it uses as much as digits as its factorization.

25290125 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4158 (or 4141 counting only the distinct ones).

The product of its (nonzero) digits is 1800, while the sum is 26.

The square root of 25290125 is about 5028.9288123814. The cubic root of 25290125 is about 293.5285338421.

Adding to 25290125 its reverse (52109252), we get a palindrome (77399377).

The spelling of 25290125 in words is "twenty-five million, two hundred ninety thousand, one hundred twenty-five".