25402532 has 6 divisors (see below), whose sum is σ = 44454438. Its totient is φ = 12701264.

The previous prime is 25402499. The next prime is 25402541. The reversal of 25402532 is 23520452.

It can be written as a sum of positive squares in only one way, i.e., 22791076 + 2611456 = 4774^2 + 1616^2 .

It is a super-2 number, since 2×25402532² = 1290577264022048, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 25402498 and 25402507.

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 3175313 + ... + 3175320.

It is an arithmetic number, because the mean of its divisors is an integer number (7409073).

Almost surely, 2^25402532 is an apocalyptic number.

It is an amenable number.

25402532 is a deficient number, since it is larger than the sum of its proper divisors (19051906).

25402532 is a wasteful number, since it uses less digits than its factorization.

25402532 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6350637 (or 6350635 counting only the distinct ones).

The product of its (nonzero) digits is 2400, while the sum is 23.

The square root of 25402532 is about 5040.0924594694. The cubic root of 25402532 is about 293.9627731414.

Adding to 25402532 its reverse (23520452), we get a palindrome (48922984).

The spelling of 25402532 in words is "twenty-five million, four hundred two thousand, five hundred thirty-two".