1252125481 has 4 divisors (see below), whose sum is σ = 1254110464. Its totient is φ = 1250140500.

The previous prime is 1252125461. The next prime is 1252125487. The reversal of 1252125481 is 1845212521.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1252125481 - 2²⁵ = 1218571049 is a prime.

It is a super-2 number, since 2×1252125481² = 3135636440338962722, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1252125487) 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, 991545 + ... + 992806.

It is an arithmetic number, because the mean of its divisors is an integer number (313527616).

Almost surely, 2^1252125481 is an apocalyptic number.

It is an amenable number.

1252125481 is a deficient number, since it is larger than the sum of its proper divisors (1984983).

1252125481 is an equidigital number, since it uses as much as digits as its factorization.

1252125481 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1984982.

The product of its digits is 6400, while the sum is 31.

The square root of 1252125481 is about 35385.3851328483. The cubic root of 1252125481 is about 1077.8275606127.

The spelling of 1252125481 in words is "one billion, two hundred fifty-two million, one hundred twenty-five thousand, four hundred eighty-one".