25919090425172 has 24 divisors (see below), whose sum is σ = 51838431974784. Its totient is φ = 11108127798432.

The previous prime is 25919090425147. The next prime is 25919090425177. The reversal of 25919090425172 is 27152409091952.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25919090425177) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3939953 + ... + 8207399.

It is an arithmetic number, because the mean of its divisors is an integer number (2159934665616).

Almost surely, 2^{25919090425172} is an apocalyptic number.

It is an amenable number.

25919090425172 is an abundant number, since it is smaller than the sum of its proper divisors (25919341549612).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

25919090425172 is a wasteful number, since it uses less digits than its factorization.

25919090425172 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4484375 (or 4484373 counting only the distinct ones).

The product of its (nonzero) digits is 4082400, while the sum is 56.

The spelling of 25919090425172 in words is "twenty-five trillion, nine hundred nineteen billion, ninety million, four hundred twenty-five thousand, one hundred seventy-two".