25015261010105 has 32 divisors (see below), whose sum is σ = 31148107200000. Its totient is φ = 19263241154304.

The previous prime is 25015261009993. The next prime is 25015261010123. The reversal of 25015261010105 is 50101016251052.

It is not a de Polignac number, because 25015261010105 - 2³⁰ = 25014187268281 is a prime.

It is a super-2 number, since 2×25015261010105² (a number of 28 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (29).

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 295440266 + ... + 295524924.

It is an arithmetic number, because the mean of its divisors is an integer number (973378350000).

Almost surely, 2^{25015261010105} is an apocalyptic number.

It is an amenable number.

25015261010105 is a deficient number, since it is larger than the sum of its proper divisors (6132846189895).

25015261010105 is a wasteful number, since it uses less digits than its factorization.

25015261010105 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 90881.

The product of its (nonzero) digits is 3000, while the sum is 29.

Adding to 25015261010105 its reverse (50101016251052), we get a palindrome (75116277261157).

The spelling of 25015261010105 in words is "twenty-five trillion, fifteen billion, two hundred sixty-one million, ten thousand, one hundred five".