25002738122 has 4 divisors (see below), whose sum is σ = 37504107186. Its totient is φ = 12501369060.

The previous prime is 25002738119. The next prime is 25002738127. The reversal of 25002738122 is 22183720052.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 20644229761 + 4358508361 = 143681^2 + 66019^2 .

It is not an unprimeable number, because it can be changed into a prime (25002738127) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6250684529 + ... + 6250684532.

Almost surely, 2^25002738122 is an apocalyptic number.

25002738122 is a deficient number, since it is larger than the sum of its proper divisors (12501369064).

25002738122 is a wasteful number, since it uses less digits than its factorization.

25002738122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12501369063.

The product of its (nonzero) digits is 13440, while the sum is 32.

The spelling of 25002738122 in words is "twenty-five billion, two million, seven hundred thirty-eight thousand, one hundred twenty-two".