25495155937 has 4 divisors (see below), whose sum is σ = 25720776900. Its totient is φ = 25269534976.

The previous prime is 25495155919. The next prime is 25495155967. The reversal of 25495155937 is 73955159452.

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

It can be written as a sum of positive squares in 2 ways, for example, as 14198867281 + 11296288656 = 119159^2 + 106284^2 .

It is a cyclic number.

It is not a de Polignac number, because 25495155937 - 2²⁷ = 25360938209 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (25495155967) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 112810312 + ... + 112810537.

It is an arithmetic number, because the mean of its divisors is an integer number (6430194225).

Almost surely, 2^25495155937 is an apocalyptic number.

It is an amenable number.

25495155937 is a deficient number, since it is larger than the sum of its proper divisors (225620963).

25495155937 is a wasteful number, since it uses less digits than its factorization.

25495155937 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 225620962.

The product of its digits is 8505000, while the sum is 55.

The spelling of 25495155937 in words is "twenty-five billion, four hundred ninety-five million, one hundred fifty-five thousand, nine hundred thirty-seven".