1255472381 has 2 divisors, whose sum is σ = 1255472382. Its totient is φ = 1255472380.

The previous prime is 1255472377. The next prime is 1255472401. The reversal of 1255472381 is 1832745521.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1215149881 + 40322500 = 34859^2 + 6350^2 .

It is a cyclic number.

It is not a de Polignac number, because 1255472381 - 2² = 1255472377 is a prime.

It is a super-2 number, since 2×1255472381² = 3152421798907618322, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1255472311) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 627736190 + 627736191.

It is an arithmetic number, because the mean of its divisors is an integer number (627736191).

Almost surely, 2^1255472381 is an apocalyptic number.

It is an amenable number.

1255472381 is a deficient number, since it is larger than the sum of its proper divisors (1).

1255472381 is an equidigital number, since it uses as much as digits as its factorization.

1255472381 is an evil number, because the sum of its binary digits is even.

The product of its digits is 67200, while the sum is 38.

The square root of 1255472381 is about 35432.6456957422. The cubic root of 1255472381 is about 1078.7870415740.

The spelling of 1255472381 in words is "one billion, two hundred fifty-five million, four hundred seventy-two thousand, three hundred eighty-one".