10261555652025 has 36 divisors (see below), whose sum is σ = 18390035938560. Its totient is φ = 5469718140000.

The previous prime is 10261555651987. The next prime is 10261555652081. The reversal of 10261555652025 is 52025655516201.

10261555652025 is a `hidden beast` number, since 1 + 0 + 2 + 6 + 1 + 55 + 56 + 520 + 25 = 666.

It is not a de Polignac number, because 10261555652025 - 2⁸ = 10261555651769 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 12568101 + ... + 13359650.

Almost surely, 2^{10261555652025} is an apocalyptic number.

10261555652025 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

10261555652025 is a deficient number, since it is larger than the sum of its proper divisors (8128480286535).

10261555652025 is a wasteful number, since it uses less digits than its factorization.

10261555652025 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25929526 (or 25929518 counting only the distinct ones).

The product of its (nonzero) digits is 900000, while the sum is 45.

The spelling of 10261555652025 in words is "ten trillion, two hundred sixty-one billion, five hundred fifty-five million, six hundred fifty-two thousand, twenty-five".