25515150401 has 8 divisors (see below), whose sum is σ = 27479873064. Its totient is φ = 23550716160.

The previous prime is 25515150391. The next prime is 25515150431. The reversal of 25515150401 is 10405151552.

It can be written as a sum of positive squares in 4 ways, for example, as 12087903025 + 13427247376 = 109945^2 + 115876^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 25515150401 - 2¹⁴ = 25515134017 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (25515150431) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 133331 + ... + 262311.

It is an arithmetic number, because the mean of its divisors is an integer number (3434984133).

Almost surely, 2^25515150401 is an apocalyptic number.

It is an amenable number.

25515150401 is a deficient number, since it is larger than the sum of its proper divisors (1964722663).

25515150401 is a wasteful number, since it uses less digits than its factorization.

25515150401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 144211.

The product of its (nonzero) digits is 5000, while the sum is 29.

The spelling of 25515150401 in words is "twenty-five billion, five hundred fifteen million, one hundred fifty thousand, four hundred one".