1372250881 has 2 divisors, whose sum is σ = 1372250882. Its totient is φ = 1372250880.

The previous prime is 1372250849. The next prime is 1372250921. The reversal of 1372250881 is 1880522731.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1273347856 + 98903025 = 35684^2 + 9945^2 .

It is a cyclic number.

It is not a de Polignac number, because 1372250881 - 2⁵ = 1372250849 is a prime.

It is a super-2 number, since 2×1372250881² = 3766144960810552322, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1372250881.

It is not a weakly prime, because it can be changed into another prime (1372250981) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 686125440 + 686125441.

It is an arithmetic number, because the mean of its divisors is an integer number (686125441).

Almost surely, 2^1372250881 is an apocalyptic number.

It is an amenable number.

1372250881 is a deficient number, since it is larger than the sum of its proper divisors (1).

1372250881 is an equidigital number, since it uses as much as digits as its factorization.

1372250881 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 26880, while the sum is 37.

The square root of 1372250881 is about 37043.9047752798. The cubic root of 1372250881 is about 1111.2484616314.

The spelling of 1372250881 in words is "one billion, three hundred seventy-two million, two hundred fifty thousand, eight hundred eighty-one".