55725339931 has 2 divisors, whose sum is σ = 55725339932. Its totient is φ = 55725339930.

The previous prime is 55725339911. The next prime is 55725339937. The reversal of 55725339931 is 13993352755.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 55725339931 - 2²¹ = 55723242779 is a prime.

It is a super-2 number, since 2×55725339931² (a number of 22 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (55725339937) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27862669965 + 27862669966.

It is an arithmetic number, because the mean of its divisors is an integer number (27862669966).

Almost surely, 2^55725339931 is an apocalyptic number.

55725339931 is a deficient number, since it is larger than the sum of its proper divisors (1).

55725339931 is an equidigital number, since it uses as much as digits as its factorization.

55725339931 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3827250, while the sum is 52.

The spelling of 55725339931 in words is "fifty-five billion, seven hundred twenty-five million, three hundred thirty-nine thousand, nine hundred thirty-one".