2545197408 has 72 divisors (see below), whose sum is σ = 7794678528. Its totient is φ = 783136512.

The previous prime is 2545197397. The next prime is 2545197409. The reversal of 2545197408 is 8047915452.

2545197408 is a `hidden beast` number, since 2 + 54 + 5 + 197 + 408 = 666.

It is a tau number, because it is divible by the number of its divisors (72).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2545197409) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 336160 + ... + 343647.

It is an arithmetic number, because the mean of its divisors is an integer number (108259424).

Almost surely, 2^2545197408 is an apocalyptic number.

It is an amenable number.

2545197408 is an abundant number, since it is smaller than the sum of its proper divisors (5249481120).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2545197408 is a wasteful number, since it uses less digits than its factorization.

2545197408 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 679836 (or 679825 counting only the distinct ones).

The product of its (nonzero) digits is 403200, while the sum is 45.

The square root of 2545197408 is about 50449.9495341670. The cubic root of 2545197408 is about 1365.3389843601.

The spelling of 2545197408 in words is "two billion, five hundred forty-five million, one hundred ninety-seven thousand, four hundred eight".