25138661614 has 24 divisors (see below), whose sum is σ = 41481843480. Its totient is φ = 11417231760.

The previous prime is 25138661609. The next prime is 25138661633. The reversal of 25138661614 is 41616683152.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 255157 + ... + 339679.

It is an arithmetic number, because the mean of its divisors is an integer number (1728410145).

Almost surely, 2^25138661614 is an apocalyptic number.

25138661614 is a deficient number, since it is larger than the sum of its proper divisors (16343181866).

25138661614 is a wasteful number, since it uses less digits than its factorization.

25138661614 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 85776 (or 85765 counting only the distinct ones).

The product of its digits is 207360, while the sum is 43.

The spelling of 25138661614 in words is "twenty-five billion, one hundred thirty-eight million, six hundred sixty-one thousand, six hundred fourteen".