25120553 has 2 divisors, whose sum is σ = 25120554. Its totient is φ = 25120552.

The previous prime is 25120549. The next prime is 25120559. The reversal of 25120553 is 35502152.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 24970009 + 150544 = 4997^2 + 388^2 .

It is a cyclic number.

It is not a de Polignac number, because 25120553 - 2² = 25120549 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (25120559) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12560276 + 12560277.

It is an arithmetic number, because the mean of its divisors is an integer number (12560277).

Almost surely, 2^25120553 is an apocalyptic number.

It is an amenable number.

25120553 is a deficient number, since it is larger than the sum of its proper divisors (1).

25120553 is an equidigital number, since it uses as much as digits as its factorization.

25120553 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1500, while the sum is 23.

The square root of 25120553 is about 5012.0408019089. The cubic root of 25120553 is about 292.8710191890.

The spelling of 25120553 in words is "twenty-five million, one hundred twenty thousand, five hundred fifty-three".