2545686431 has 2 divisors, whose sum is σ = 2545686432. Its totient is φ = 2545686430.

The previous prime is 2545686419. The next prime is 2545686463. The reversal of 2545686431 is 1346865452.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2545686431 - 2¹⁰ = 2545685407 is a prime.

It is a super-2 number, since 2×2545686431² = 12961038809955035522, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2545686631) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1272843215 + 1272843216.

It is an arithmetic number, because the mean of its divisors is an integer number (1272843216).

Almost surely, 2^2545686431 is an apocalyptic number.

2545686431 is a deficient number, since it is larger than the sum of its proper divisors (1).

2545686431 is an equidigital number, since it uses as much as digits as its factorization.

2545686431 is an evil number, because the sum of its binary digits is even.

The product of its digits is 691200, while the sum is 44.

The square root of 2545686431 is about 50454.7959167412. The cubic root of 2545686431 is about 1365.4264221631.

The spelling of 2545686431 in words is "two billion, five hundred forty-five million, six hundred eighty-six thousand, four hundred thirty-one".