1264625051 has 4 divisors (see below), whose sum is σ = 1264779600. Its totient is φ = 1264470504.

The previous prime is 1264625041. The next prime is 1264625059. The reversal of 1264625051 is 1505264621.

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 1264625051 - 2³⁰ = 190883227 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1264624999 and 1264625017.

It is not an unprimeable number, because it can be changed into a prime (1264625059) 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, 64271 + ... + 81608.

It is an arithmetic number, because the mean of its divisors is an integer number (316194900).

Almost surely, 2^1264625051 is an apocalyptic number.

1264625051 is a deficient number, since it is larger than the sum of its proper divisors (154549).

1264625051 is an equidigital number, since it uses as much as digits as its factorization.

1264625051 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 154548.

The product of its (nonzero) digits is 14400, while the sum is 32.

The square root of 1264625051 is about 35561.5670492739. The cubic root of 1264625051 is about 1081.4022283981.

Adding to 1264625051 its reverse (1505264621), we get a palindrome (2769889672).

The spelling of 1264625051 in words is "one billion, two hundred sixty-four million, six hundred twenty-five thousand, fifty-one".