1255401651 has 8 divisors (see below), whose sum is σ = 1912993024. Its totient is φ = 717372360.

The previous prime is 1255401629. The next prime is 1255401683. The reversal of 1255401651 is 1561045521.

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

It is not a de Polignac number, because 1255401651 - 2⁷ = 1255401523 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1255401551) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 29890495 + ... + 29890536.

It is an arithmetic number, because the mean of its divisors is an integer number (239124128).

Almost surely, 2^1255401651 is an apocalyptic number.

1255401651 is a deficient number, since it is larger than the sum of its proper divisors (657591373).

1255401651 is an equidigital number, since it uses as much as digits as its factorization.

1255401651 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 59781041.

The product of its (nonzero) digits is 6000, while the sum is 30.

The square root of 1255401651 is about 35431.6475908191. The cubic root of 1255401651 is about 1078.7667825221.

The spelling of 1255401651 in words is "one billion, two hundred fifty-five million, four hundred one thousand, six hundred fifty-one".