1254628249 has 32 divisors (see below), whose sum is σ = 1535385600. Its totient is φ = 1002499200.

The previous prime is 1254628217. The next prime is 1254628267. The reversal of 1254628249 is 9428264521.

It is not a de Polignac number, because 1254628249 - 2⁵ = 1254628217 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1254628279) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 737602 + ... + 739300.

It is an arithmetic number, because the mean of its divisors is an integer number (47980800).

Almost surely, 2^1254628249 is an apocalyptic number.

It is an amenable number.

1254628249 is a deficient number, since it is larger than the sum of its proper divisors (280757351).

1254628249 is a wasteful number, since it uses less digits than its factorization.

1254628249 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1861.

The product of its digits is 276480, while the sum is 43.

The square root of 1254628249 is about 35420.7319094341. The cubic root of 1254628249 is about 1078.5452088726.

The spelling of 1254628249 in words is "one billion, two hundred fifty-four million, six hundred twenty-eight thousand, two hundred forty-nine".