2545404897825 has 36 divisors (see below), whose sum is σ = 4727958672528. Its totient is φ = 1357549275600.

The previous prime is 2545404897823. The next prime is 2545404897881. The reversal of 2545404897825 is 5287984045452.

2545404897825 is a `hidden beast` number, since 2 + 5 + 4 + 540 + 4 + 8 + 9 + 7 + 82 + 5 = 666.

It is not a de Polignac number, because 2545404897825 - 2¹ = 2545404897823 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2545404897823) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 209492271 + ... + 209504420.

It is an arithmetic number, because the mean of its divisors is an integer number (131332185348).

Almost surely, 2^{2545404897825} is an apocalyptic number.

2545404897825 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

2545404897825 is a deficient number, since it is larger than the sum of its proper divisors (2182553774703).

2545404897825 is an equidigital number, since it uses as much as digits as its factorization.

2545404897825 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 418996716 (or 418996699 counting only the distinct ones).

The product of its (nonzero) digits is 129024000, while the sum is 63.

The spelling of 2545404897825 in words is "two trillion, five hundred forty-five billion, four hundred four million, eight hundred ninety-seven thousand, eight hundred twenty-five".