1375555250 has 64 divisors (see below), whose sum is σ = 2774034432. Its totient is φ = 509256000.

The previous prime is 1375555249. The next prime is 1375555267. The reversal of 1375555250 is 525555731.

It is a happy number.

It is a hoax number, since the sum of its digits (38) coincides with the sum of the digits of its distinct prime factors.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 174392 + ... + 182108.

It is an arithmetic number, because the mean of its divisors is an integer number (43344288).

Almost surely, 2^1375555250 is an apocalyptic number.

1375555250 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1375555250 is an abundant number, since it is smaller than the sum of its proper divisors (1398479182).

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

1375555250 is a wasteful number, since it uses less digits than its factorization.

1375555250 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7788 (or 7778 counting only the distinct ones).

The product of its (nonzero) digits is 131250, while the sum is 38.

The square root of 1375555250 is about 37088.4786692579. The cubic root of 1375555250 is about 1112.1397057407.

The spelling of 1375555250 in words is "one billion, three hundred seventy-five million, five hundred fifty-five thousand, two hundred fifty".