1252612156 has 24 divisors (see below), whose sum is σ = 2377632096. Its totient is φ = 575086080.

The previous prime is 1252612147. The next prime is 1252612159. The reversal of 1252612156 is 6512162521.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1252612159) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 221856 + ... + 227431.

It is an arithmetic number, because the mean of its divisors is an integer number (99068004).

Almost surely, 2^1252612156 is an apocalyptic number.

It is an amenable number.

1252612156 is a deficient number, since it is larger than the sum of its proper divisors (1125019940).

1252612156 is a wasteful number, since it uses less digits than its factorization.

1252612156 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 449349 (or 449347 counting only the distinct ones).

The product of its digits is 7200, while the sum is 31.

The square root of 1252612156 is about 35392.2612445150. The cubic root of 1252612156 is about 1077.9671855384.

Adding to 1252612156 its reverse (6512162521), we get a palindrome (7764774677).

The spelling of 1252612156 in words is "one billion, two hundred fifty-two million, six hundred twelve thousand, one hundred fifty-six".