251227025149 has 16 divisors (see below), whose sum is σ = 254161797120. Its totient is φ = 248313888000.

The previous prime is 251227025113. The next prime is 251227025173. The reversal of 251227025149 is 941520722152.

It is a cyclic number.

It is not a de Polignac number, because 251227025149 - 2²³ = 251218636541 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (251227025249) 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, 21214372 + ... + 21226210.

It is an arithmetic number, because the mean of its divisors is an integer number (15885112320).

Almost surely, 2^251227025149 is an apocalyptic number.

It is an amenable number.

251227025149 is a deficient number, since it is larger than the sum of its proper divisors (2934771971).

251227025149 is a wasteful number, since it uses less digits than its factorization.

251227025149 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12732.

The product of its (nonzero) digits is 100800, while the sum is 40.

The spelling of 251227025149 in words is "two hundred fifty-one billion, two hundred twenty-seven million, twenty-five thousand, one hundred forty-nine".