1325131951 has 16 divisors (see below), whose sum is σ = 1565430048. Its totient is φ = 1105833600.

The previous prime is 1325131943. The next prime is 1325131957. The reversal of 1325131951 is 1591315231.

It is a cyclic number.

It is not a de Polignac number, because 1325131951 - 2³ = 1325131943 is a prime.

It is a super-2 number, since 2×1325131951² = 3511949375122132802, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1325131957) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 285 + ... + 51481.

It is an arithmetic number, because the mean of its divisors is an integer number (97839378).

Almost surely, 2^1325131951 is an apocalyptic number.

1325131951 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

1325131951 is a deficient number, since it is larger than the sum of its proper divisors (240298097).

1325131951 is a wasteful number, since it uses less digits than its factorization.

1325131951 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51402.

The product of its digits is 4050, while the sum is 31.

The square root of 1325131951 is about 36402.3618876578. The cubic root of 1325131951 is about 1098.3810760950.

The spelling of 1325131951 in words is "one billion, three hundred twenty-five million, one hundred thirty-one thousand, nine hundred fifty-one".