397154332225 has 24 divisors (see below), whose sum is σ = 574799424768. Its totient is φ = 266540044800.

The previous prime is 397154332207. The next prime is 397154332339. The reversal of 397154332225 is 522233451793.

It is a happy number.

It is not a de Polignac number, because 397154332225 - 2⁵ = 397154332193 is a prime.

It is a Duffinian number.

It is an unprimeable number.

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 23 ways as a sum of consecutive naturals, for example, 24134896 + ... + 24151345.

It is an arithmetic number, because the mean of its divisors is an integer number (23949976032).

Almost surely, 2^397154332225 is an apocalyptic number.

397154332225 is a gapful number since it is divisible by the number (35) formed by its first and last digit.

It is an amenable number.

397154332225 is a deficient number, since it is larger than the sum of its proper divisors (177645092543).

397154332225 is a wasteful number, since it uses less digits than its factorization.

397154332225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 48286305 (or 48286300 counting only the distinct ones).

The product of its digits is 1360800, while the sum is 46.

The spelling of 397154332225 in words is "three hundred ninety-seven billion, one hundred fifty-four million, three hundred thirty-two thousand, two hundred twenty-five".