25395961340 has 12 divisors (see below), whose sum is σ = 53331518856. Its totient is φ = 10158384528.

The previous prime is 25395961301. The next prime is 25395961351. The reversal of 25395961340 is 4316959352.

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, 634899014 + ... + 634899053.

It is an arithmetic number, because the mean of its divisors is an integer number (4444293238).

Almost surely, 2^25395961340 is an apocalyptic number.

25395961340 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

25395961340 is an abundant number, since it is smaller than the sum of its proper divisors (27935557516).

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

25395961340 is a wasteful number, since it uses less digits than its factorization.

25395961340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1269798076 (or 1269798074 counting only the distinct ones).

The product of its (nonzero) digits is 874800, while the sum is 47.

The spelling of 25395961340 in words is "twenty-five billion, three hundred ninety-five million, nine hundred sixty-one thousand, three hundred forty".