25670516 has 6 divisors (see below), whose sum is σ = 44923410. Its totient is φ = 12835256.

The previous prime is 25670509. The next prime is 25670531. The reversal of 25670516 is 61507652.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 23078416 + 2592100 = 4804^2 + 1610^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3208811 + ... + 3208818.

It is an arithmetic number, because the mean of its divisors is an integer number (7487235).

Almost surely, 2^25670516 is an apocalyptic number.

It is an amenable number.

25670516 is a deficient number, since it is larger than the sum of its proper divisors (19252894).

25670516 is a wasteful number, since it uses less digits than its factorization.

25670516 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6417633 (or 6417631 counting only the distinct ones).

The product of its (nonzero) digits is 12600, while the sum is 32.

The square root of 25670516 is about 5066.6079382561. The cubic root of 25670516 is about 294.9928792689.

The spelling of 25670516 in words is "twenty-five million, six hundred seventy thousand, five hundred sixteen".