2545281903 has 8 divisors (see below), whose sum is σ = 3414031488. Its totient is φ = 1686693464.

The previous prime is 2545281899. The next prime is 2545281941. The reversal of 2545281903 is 3091825452.

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 2545281903 - 2² = 2545281899 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2545281943) 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, 2539701 + ... + 2540702.

It is an arithmetic number, because the mean of its divisors is an integer number (426753936).

Almost surely, 2^2545281903 is an apocalyptic number.

2545281903 is a deficient number, since it is larger than the sum of its proper divisors (868749585).

2545281903 is a wasteful number, since it uses less digits than its factorization.

2545281903 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5080573.

The product of its (nonzero) digits is 86400, while the sum is 39.

The square root of 2545281903 is about 50450.7869413352. The cubic root of 2545281903 is about 1365.3540929512.

The spelling of 2545281903 in words is "two billion, five hundred forty-five million, two hundred eighty-one thousand, nine hundred three".