2531256245 has 16 divisors (see below), whose sum is σ = 3477565440. Its totient is φ = 1732654464.

The previous prime is 2531256197. The next prime is 2531256257. The reversal of 2531256245 is 5426521352.

It is a cyclic number.

It is not a de Polignac number, because 2531256245 - 2¹² = 2531252149 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (35).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 43637 + ... + 83466.

It is an arithmetic number, because the mean of its divisors is an integer number (217347840).

Almost surely, 2^2531256245 is an apocalyptic number.

It is an amenable number.

2531256245 is a deficient number, since it is larger than the sum of its proper divisors (946309195).

2531256245 is a wasteful number, since it uses less digits than its factorization.

2531256245 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 127684.

The product of its digits is 72000, while the sum is 35.

The square root of 2531256245 is about 50311.5915570160. The cubic root of 2531256245 is about 1362.8415654052.

Adding to 2531256245 its reverse (5426521352), we get a palindrome (7957777597).

The spelling of 2531256245 in words is "two billion, five hundred thirty-one million, two hundred fifty-six thousand, two hundred forty-five".