1252650138 has 32 divisors (see below), whose sum is σ = 2520891072. Its totient is φ = 414960000.

The previous prime is 1252650109. The next prime is 1252650167. The reversal of 1252650138 is 8310562521.

It is an interprime number because it is at equal distance from previous prime (1252650109) and next prime (1252650167).

It is a junction number, because it is equal to n+sod(n) for n = 1252650099 and 1252650108.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1145520 + ... + 1146612.

It is an arithmetic number, because the mean of its divisors is an integer number (78777846).

Almost surely, 2^1252650138 is an apocalyptic number.

1252650138 is an abundant number, since it is smaller than the sum of its proper divisors (1268240934).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1252650138 is a wasteful number, since it uses less digits than its factorization.

1252650138 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2110.

The product of its (nonzero) digits is 14400, while the sum is 33.

The square root of 1252650138 is about 35392.7978266765. The cubic root of 1252650138 is about 1077.9780808864.

The spelling of 1252650138 in words is "one billion, two hundred fifty-two million, six hundred fifty thousand, one hundred thirty-eight".