25014037861 has 2 divisors, whose sum is σ = 25014037862. Its totient is φ = 25014037860.

The previous prime is 25014037843. The next prime is 25014037879. The reversal of 25014037861 is 16873041052.

It is a balanced prime because it is at equal distance from previous prime (25014037843) and next prime (25014037879).

It can be written as a sum of positive squares in only one way, i.e., 16172208900 + 8841828961 = 127170^2 + 94031^2 .

It is a cyclic number.

It is not a de Polignac number, because 25014037861 - 2¹⁹ = 25013513573 is a prime.

It is a super-2 number, since 2×25014037861² (a number of 22 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 25014037861.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (25014037801) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12507018930 + 12507018931.

It is an arithmetic number, because the mean of its divisors is an integer number (12507018931).

Almost surely, 2^25014037861 is an apocalyptic number.

It is an amenable number.

25014037861 is a deficient number, since it is larger than the sum of its proper divisors (1).

25014037861 is an equidigital number, since it uses as much as digits as its factorization.

25014037861 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 40320, while the sum is 37.

The spelling of 25014037861 in words is "twenty-five billion, fourteen million, thirty-seven thousand, eight hundred sixty-one".