25544350461 has 16 divisors (see below), whose sum is σ = 39310121088. Its totient is φ = 14452248000.

The previous prime is 25544350441. The next prime is 25544350463. The reversal of 25544350461 is 16405344552.

It is not a de Polignac number, because 25544350461 - 2¹⁰ = 25544349437 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25544350463) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6019650 + ... + 6023891.

It is an arithmetic number, because the mean of its divisors is an integer number (2456882568).

Almost surely, 2^25544350461 is an apocalyptic number.

25544350461 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

25544350461 is a deficient number, since it is larger than the sum of its proper divisors (13765770627).

25544350461 is a wasteful number, since it uses less digits than its factorization.

25544350461 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12043652.

The product of its (nonzero) digits is 288000, while the sum is 39.

The spelling of 25544350461 in words is "twenty-five billion, five hundred forty-four million, three hundred fifty thousand, four hundred sixty-one".