25211425 has 24 divisors (see below), whose sum is σ = 33419736. Its totient is φ = 18800640.

The previous prime is 25211419. The next prime is 25211429. The reversal of 25211425 is 52411252.

25211425 is nontrivially palindromic in base 8.

It can be written as a sum of positive squares in 12 ways, for example, as 7225344 + 17986081 = 2688^2 + 4241^2 .

It is a de Polignac number, because none of the positive numbers 2^k-25211425 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 25211396 and 25211405.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25211429) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 58009 + ... + 58441.

It is an arithmetic number, because the mean of its divisors is an integer number (1392489).

Almost surely, 2^25211425 is an apocalyptic number.

25211425 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

25211425 is a deficient number, since it is larger than the sum of its proper divisors (8208311).

25211425 is a wasteful number, since it uses less digits than its factorization.

25211425 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 597 (or 592 counting only the distinct ones).

The product of its digits is 800, while the sum is 22.

The square root of 25211425 is about 5021.0979874924. The cubic root of 25211425 is about 293.2237416308.

Adding to 25211425 its reverse (52411252), we get a palindrome (77622677).

The spelling of 25211425 in words is "twenty-five million, two hundred eleven thousand, four hundred twenty-five".