25207400668 has 12 divisors (see below), whose sum is σ = 44229346840. Its totient is φ = 12570444432.

The previous prime is 25207400653. The next prime is 25207400671. The reversal of 25207400668 is 86600470252.

It is a super-3 number, since 3×25207400668³ (a number of 32 digits) contains 333 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 25207400668.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8312271 + ... + 8315302.

Almost surely, 2^25207400668 is an apocalyptic number.

It is an amenable number.

25207400668 is a deficient number, since it is larger than the sum of its proper divisors (19021946172).

25207400668 is a wasteful number, since it uses less digits than its factorization.

25207400668 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16627956 (or 16627954 counting only the distinct ones).

The product of its (nonzero) digits is 161280, while the sum is 40.

The spelling of 25207400668 in words is "twenty-five billion, two hundred seven million, four hundred thousand, six hundred sixty-eight".