25207414428 has 48 divisors (see below), whose sum is σ = 71173880064. Its totient is φ = 6778464000.

The previous prime is 25207414391. The next prime is 25207414439. The reversal of 25207414428 is 82441470252.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8824698 + ... + 8827553.

It is an arithmetic number, because the mean of its divisors is an integer number (1482789168).

Almost surely, 2^25207414428 is an apocalyptic number.

25207414428 is a gapful number since it is divisible by the number (28) formed by its first and last digit.

It is an amenable number.

25207414428 is an abundant number, since it is smaller than the sum of its proper divisors (45966465636).

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

25207414428 is a wasteful number, since it uses less digits than its factorization.

25207414428 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17652282 (or 17652280 counting only the distinct ones).

The product of its (nonzero) digits is 143360, while the sum is 39.

The spelling of 25207414428 in words is "twenty-five billion, two hundred seven million, four hundred fourteen thousand, four hundred twenty-eight".