1254726261 has 16 divisors (see below), whose sum is σ = 1859659200. Its totient is φ = 836121744.

The previous prime is 1254726247. The next prime is 1254726281. The reversal of 1254726261 is 1626274521.

It is a happy number.

1254726261 is a `hidden beast` number, since 1 + 25 + 4 + 7 + 2 + 626 + 1 = 666.

It is not a de Polignac number, because 1254726261 - 2⁷ = 1254726133 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1254726211) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 63055 + ... + 80531.

It is an arithmetic number, because the mean of its divisors is an integer number (116228700).

Almost surely, 2^1254726261 is an apocalyptic number.

It is an amenable number.

1254726261 is a deficient number, since it is larger than the sum of its proper divisors (604932939).

1254726261 is a wasteful number, since it uses less digits than its factorization.

1254726261 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20145 (or 20139 counting only the distinct ones).

The product of its digits is 40320, while the sum is 36.

The square root of 1254726261 is about 35422.1154224307. The cubic root of 1254726261 is about 1078.5732935850.

The spelling of 1254726261 in words is "one billion, two hundred fifty-four million, seven hundred twenty-six thousand, two hundred sixty-one".