1255897250 has 16 divisors (see below), whose sum is σ = 2351040120. Its totient is φ = 502358800.

The previous prime is 1255897243. The next prime is 1255897271. The reversal of 1255897250 is 527985521.

It can be written as a sum of positive squares in 4 ways, for example, as 163660849 + 1092236401 = 12793^2 + 33049^2 .

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2511545 + ... + 2512044.

Almost surely, 2^1255897250 is an apocalyptic number.

1255897250 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1255897250 is a deficient number, since it is larger than the sum of its proper divisors (1095142870).

1255897250 is an equidigital number, since it uses as much as digits as its factorization.

1255897250 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5023606 (or 5023596 counting only the distinct ones).

The product of its (nonzero) digits is 252000, while the sum is 44.

The square root of 1255897250 is about 35438.6406342004. The cubic root of 1255897250 is about 1078.9087199385.

The spelling of 1255897250 in words is "one billion, two hundred fifty-five million, eight hundred ninety-seven thousand, two hundred fifty".