25275137650 has 24 divisors (see below), whose sum is σ = 53727721920. Its totient is φ = 8665761360.

The previous prime is 25275137647. The next prime is 25275137653. The reversal of 25275137650 is 5673157252.

It is an interprime number because it is at equal distance from previous prime (25275137647) and next prime (25275137653).

It is a junction number, because it is equal to n+sod(n) for n = 25275137597 and 25275137606.

It is not an unprimeable number, because it can be changed into a prime (25275137653) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 36106990 + ... + 36107689.

It is an arithmetic number, because the mean of its divisors is an integer number (2238655080).

Almost surely, 2^25275137650 is an apocalyptic number.

25275137650 is an abundant number, since it is smaller than the sum of its proper divisors (28452584270).

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

25275137650 is a wasteful number, since it uses less digits than its factorization.

25275137650 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 72214698 (or 72214693 counting only the distinct ones).

The product of its (nonzero) digits is 441000, while the sum is 43.

The spelling of 25275137650 in words is "twenty-five billion, two hundred seventy-five million, one hundred thirty-seven thousand, six hundred fifty".