2542240251 has 12 divisors (see below), whose sum is σ = 3672580912. Its totient is φ = 1694616336.

The previous prime is 2542240237. The next prime is 2542240279. The reversal of 2542240251 is 1520422452.

2542240251 is a `hidden beast` number, since 254 + 2 + 2 + 402 + 5 + 1 = 666.

It is not a de Polignac number, because 2542240251 - 2¹¹ = 2542238203 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2542240201) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 101370 + ... + 123936.

Almost surely, 2^2542240251 is an apocalyptic number.

2542240251 is a deficient number, since it is larger than the sum of its proper divisors (1130340661).

2542240251 is a wasteful number, since it uses less digits than its factorization.

2542240251 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35090 (or 35087 counting only the distinct ones).

The product of its (nonzero) digits is 6400, while the sum is 27.

The square root of 2542240251 is about 50420.6331872181. The cubic root of 2542240251 is about 1364.8100029397.

The spelling of 2542240251 in words is "two billion, five hundred forty-two million, two hundred forty thousand, two hundred fifty-one".