1255377631 has 8 divisors (see below), whose sum is σ = 1330165584. Its totient is φ = 1180694400.

The previous prime is 1255377623. The next prime is 1255377653. The reversal of 1255377631 is 1367735521.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1255377631 - 2³ = 1255377623 is a prime.

It is a super-2 number, since 2×1255377631² = 3151945992830344322, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1255377691) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 780 + ... + 50113.

It is an arithmetic number, because the mean of its divisors is an integer number (166270698).

Almost surely, 2^1255377631 is an apocalyptic number.

1255377631 is a deficient number, since it is larger than the sum of its proper divisors (74787953).

1255377631 is a wasteful number, since it uses less digits than its factorization.

1255377631 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 52361.

The product of its digits is 132300, while the sum is 40.

The square root of 1255377631 is about 35431.3086266934. The cubic root of 1255377631 is about 1078.7599023486.

The spelling of 1255377631 in words is "one billion, two hundred fifty-five million, three hundred seventy-seven thousand, six hundred thirty-one".