25620403 has 2 divisors, whose sum is σ = 25620404. Its totient is φ = 25620402.

The previous prime is 25620383. The next prime is 25620409. The reversal of 25620403 is 30402652.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 25620403 - 2¹³ = 25612211 is a prime.

It is not a weakly prime, because it can be changed into another prime (25620409) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12810201 + 12810202.

It is an arithmetic number, because the mean of its divisors is an integer number (12810202).

Almost surely, 2^25620403 is an apocalyptic number.

25620403 is a deficient number, since it is larger than the sum of its proper divisors (1).

25620403 is an equidigital number, since it uses as much as digits as its factorization.

25620403 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1440, while the sum is 22.

The square root of 25620403 is about 5061.6601031677. The cubic root of 25620403 is about 294.8007962816.

The spelling of 25620403 in words is "twenty-five million, six hundred twenty thousand, four hundred three".