25630037 has 4 divisors (see below), whose sum is σ = 25653420. Its totient is φ = 25606656.

The previous prime is 25630009. The next prime is 25630039. The reversal of 25630037 is 73003652.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 13734436 + 11895601 = 3706^2 + 3449^2 .

It is a cyclic number.

It is not a de Polignac number, because 25630037 - 2⁶ = 25629973 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 25629988 and 25630015.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25630039) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9962 + ... + 12267.

It is an arithmetic number, because the mean of its divisors is an integer number (6413355).

Almost surely, 2^25630037 is an apocalyptic number.

It is an amenable number.

25630037 is a deficient number, since it is larger than the sum of its proper divisors (23383).

25630037 is a wasteful number, since it uses less digits than its factorization.

25630037 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23382.

The product of its (nonzero) digits is 3780, while the sum is 26.

The square root of 25630037 is about 5062.6116777806. The cubic root of 25630037 is about 294.8377428116.

Adding to 25630037 its reverse (73003652), we get a palindrome (98633689).

The spelling of 25630037 in words is "twenty-five million, six hundred thirty thousand, thirty-seven".