2025631 has 2 divisors, whose sum is σ = 2025632. Its totient is φ = 2025630.

The previous prime is 2025629. The next prime is 2025637. The reversal of 2025631 is 1365202.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2025631 - 2¹ = 2025629 is a prime.

It is a super-2 number, since 2×2025631² = 8206361896322, which contains 22 as substring.

Together with 2025629, it forms a pair of twin primes.

It is a junction number, because it is equal to n+sod(n) for n = 2025599 and 2025608.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2025637) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1012815 + 1012816.

It is an arithmetic number, because the mean of its divisors is an integer number (1012816).

2^2025631 is an apocalyptic number.

2025631 is a deficient number, since it is larger than the sum of its proper divisors (1).

2025631 is an equidigital number, since it uses as much as digits as its factorization.

2025631 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 360, while the sum is 19.

The square root of 2025631 is about 1423.2466406073. The cubic root of 2025631 is about 126.5280393198.

It can be divided in two parts, 20 and 25631, that added together give a triangular number (25651 = T₂₂₆).

The spelling of 2025631 in words is "two million, twenty-five thousand, six hundred thirty-one".