2545401749 has 8 divisors (see below), whose sum is σ = 2777220192. Its totient is φ = 2313653040.

The previous prime is 2545401673. The next prime is 2545401763. The reversal of 2545401749 is 9471045452.

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 2545401749 - 2²⁴ = 2528624533 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2545401779) 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, 85187 + ... + 111119.

It is an arithmetic number, because the mean of its divisors is an integer number (347152524).

Almost surely, 2^2545401749 is an apocalyptic number.

It is an amenable number.

2545401749 is a deficient number, since it is larger than the sum of its proper divisors (231818443).

2545401749 is a wasteful number, since it uses less digits than its factorization.

2545401749 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34867.

The product of its (nonzero) digits is 201600, while the sum is 41.

The square root of 2545401749 is about 50451.9746788964. The cubic root of 2545401749 is about 1365.3755220980.

The spelling of 2545401749 in words is "two billion, five hundred forty-five million, four hundred one thousand, seven hundred forty-nine".