425157215731 has 4 divisors (see below), whose sum is σ = 425209914000. Its totient is φ = 425104517464.

The previous prime is 425157215671. The next prime is 425157215737. The reversal of 425157215731 is 137512751524.

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

It is a cyclic number.

It is not a de Polignac number, because 425157215731 - 2⁷ = 425157215603 is a prime.

It is a super-2 number, since 2×425157215731² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (425157215737) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 26337031 + ... + 26353168.

It is an arithmetic number, because the mean of its divisors is an integer number (106302478500).

Almost surely, 2^425157215731 is an apocalyptic number.

425157215731 is a deficient number, since it is larger than the sum of its proper divisors (52698269).

425157215731 is an equidigital number, since it uses as much as digits as its factorization.

425157215731 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 52698268.

The product of its digits is 294000, while the sum is 43.

The spelling of 425157215731 in words is "four hundred twenty-five billion, one hundred fifty-seven million, two hundred fifteen thousand, seven hundred thirty-one".